WO2016125439A1 - Procédé de fabrication d'élément, et système de fabrication d'élément - Google Patents

Procédé de fabrication d'élément, et système de fabrication d'élément Download PDF

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Publication number
WO2016125439A1
WO2016125439A1 PCT/JP2016/000285 JP2016000285W WO2016125439A1 WO 2016125439 A1 WO2016125439 A1 WO 2016125439A1 JP 2016000285 W JP2016000285 W JP 2016000285W WO 2016125439 A1 WO2016125439 A1 WO 2016125439A1
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WIPO (PCT)
Prior art keywords
workpiece
forming
peripheral wall
outer peripheral
wall surface
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Application number
PCT/JP2016/000285
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English (en)
Japanese (ja)
Inventor
田中　健介
清明 西井
憲吾 山田
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from JP2015246121A external-priority patent/JP2016144828A/ja
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2016125439A1 publication Critical patent/WO2016125439A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets

Definitions

  • the present disclosure relates to a member manufacturing method and a member manufacturing system.
  • Patent Document 1 includes two rolling rollers and two flat rollers each having an annular protrusion capable of coming into contact with the workpiece, and the rolling roller has an annular shape on the outer peripheral surface of the workpiece.
  • a method for manufacturing a member is described in which the protruding portion is molded and at the same time the outer wall on the radially outer side of the protruding portion is flattened by a flat roller.
  • a molding load that acts on a workpiece in forging is increased in proportion to a contact area between the workpiece and a tool that abuts the workpiece.
  • two rolling rollers and two flat rollers provided in parallel to the center axis of the workpiece are pressed against the outer wall on the radially outer side of the workpiece. .
  • the contact area between the two rolling rollers and the two flat rolls and the workpiece is relatively large.
  • the molding load exerted on the workpiece by the two rolling rollers and the two flat rolls is increased, which may increase the energy consumption in the forging process.
  • An object of the present disclosure is to provide a method for manufacturing a member that reduces the energy required for manufacturing the member while improving the material yield.
  • the member manufacturing method includes a first molding step and a second molding step.
  • the first tool is pressed against a part of the first outer peripheral wall surface of the workpiece that is rotatably provided, and a small-diameter portion having an outer diameter smaller than the outer diameter of the workpiece is formed.
  • the second tool is pressed against a part of the second outer peripheral wall surface of the workpiece to move relative to the workpiece in the radial direction, and a protruding portion protruding in the radial direction of the workpiece is formed.
  • the material of the part having the first outer peripheral wall surface of the workpiece is the central axis of the workpiece Move in the direction along Thereby, the small diameter part which has an outer diameter smaller than the outer diameter of a to-be-processed member is shape
  • the second outer periphery of the workpiece is The material of the part having the wall surface moves in the radial direction of the workpiece, and a protruding portion protruding in the radial direction of the workpiece is formed on the workpiece.
  • the material manufacturing method can improve the material yield.
  • the small diameter part is formed by pressing the first tool against a part of the first outer peripheral wall surface of the workpiece.
  • the protrusion is formed by pressing the second tool against a part of the second outer peripheral wall surface of the workpiece. That is, each of the small diameter portion or the protruding portion is formed in a separate process.
  • first tool and the second tool are pressed against a part of the outer peripheral wall surface of a predetermined part of the workpiece.
  • the contact area between the first tool and the workpiece and the contact area between the second tool and the workpiece are smaller than when the entire workpiece is molded at one time. Becomes even smaller. Therefore, the energy required for manufacturing the member can be reduced.
  • FIG. 1 It is a schematic diagram of the manufacturing system of the member by a first embodiment. It is a schematic diagram of the small diameter part shaping
  • FIG. 2nd embodiment It is a schematic diagram explaining the small diameter part formation process in the manufacturing method of the member by 2nd embodiment, Comprising: It is a schematic diagram explaining the continuation of FIG. It is a schematic diagram of the manufacturing system of the member by 3rd embodiment. It is a schematic diagram of the material gathering apparatus with which the manufacturing system of the member by 3rd embodiment is provided. It is a flowchart of the manufacturing method of the member by a third embodiment. It is a schematic diagram explaining the material gathering process in the manufacturing method of the member by 3rd embodiment. It is a schematic diagram explaining the effect of the material gathering process in the manufacturing method of the member by 3rd embodiment.
  • the forging system 1 as a “member manufacturing system” forges the workpiece 18 shown in FIG. 4A and forms the processed member 10 as a “member” shown in FIG. 4B.
  • the processed member 10 is, for example, a common rail that can store fuel injected by a fuel injection valve.
  • FIG. 4A shows a perspective view of the workpiece 18.
  • the workpiece 18 is a columnar member having a substantially circular cross section before being formed in the forging system 1.
  • the workpiece 18 is made of metal, for example.
  • the processed member 10 is composed of a plurality of small diameter portions formed in a columnar shape and a plurality of protrusions provided adjacent to the small diameter portions.
  • the processed member 10 has four small-diameter portions and three projecting portions alternately combined.
  • the small-diameter portions of the processed member 10 are referred to as small-diameter portions 11, 13, 15, and 17 in this order from the front side of the sheet of FIG.
  • the small-diameter portions 11, 13, 15, and 17 are formed in a circular columnar shape having four outer cross-sections in the axial direction and the same outer diameter D10.
  • the central axes of the small diameter portions 11, 13, 15, 17 are all provided coaxially.
  • the central axis of the small diameter portions 11, 13, 15, and 17 is set as the central axis C ⁇ b> 10 of the processed member 10.
  • the outer diameter D ⁇ b> 10 of the small diameter portions 11, 13, 15, and 17 is smaller than the outer diameter D ⁇ b> 18 of the workpiece 18.
  • the protrusions 12, 14, and 16 are formed in a rectangular parallelepiped shape having a rectangular cross section perpendicular to the central axis C10.
  • the protrusions 12, 14, 16 are formed to protrude in the radial direction with respect to the central axis C ⁇ b> 10 of the small diameter parts 11, 13, 15, 17.
  • all the protrusion parts 12, 14, and 16 are formed so that it may protrude above the paper surface of FIG.4 (b).
  • the forging processing system 1 includes a control unit 8, a small diameter part forming apparatus 20, a protruding part forming apparatus 30, and the like.
  • the control unit 8 includes a CPU, a ROM, a RAM, and the like (not shown).
  • the control unit 8 is electrically connected to each of the small-diameter portion forming device 20 and the protruding portion forming device 30 by signal lines L20 and L30.
  • the control unit 8 controls the operations of the small-diameter portion forming device 20 and the protruding portion forming device 30 based on information regarding the shape of the processed member 10 input from the outside.
  • the small-diameter portion forming apparatus 20 includes a first contact plate 21 as a “first tool”, a second contact plate 22 as a “first tool”, a base 23, a drive plate 24, a pressure unit 25, and a drive unit 26. Etc. In the small-diameter portion molding apparatus 20, the workpiece 18 is rotatably provided. For convenience of explanation, the upper side of FIG. 2 is the “top side” and the lower side of FIG. 2 is the “ground side”, but the direction in which the small-diameter portion forming device 20 is installed is not limited to this.
  • the first contact plate 21 is positioned on the top side of the workpiece 18 set in the small-diameter portion forming apparatus 20.
  • the first contact plate 21 is supported by the drive plate 24.
  • the first abutment plate 21 is formed on a part of the outer peripheral wall surface 110 as the “first outer peripheral wall surface” of the outer peripheral wall surface of the workpiece 18, for example, the small-diameter portion forming portion A ⁇ b> 11 (see FIG. 4) of the processed member 18. It is provided so that it can contact.
  • the length of the first contact plate 21 in the direction of the central axis C18 of the workpiece 18 set in the small diameter portion forming device 20 is the direction of the central axis C10 of the small diameter portions 11, 13, 15, 17 of the processed member 10. It is formed so as to be less than the length of.
  • the second contact plate 22 is provided on the ground side of the workpiece 18 set in the small-diameter portion forming apparatus 20 and at a position between the first contact plate 21 and the central axis C18 of the workpiece 18.
  • the second contact plate 22 is fixed on a base 23 fixed on a horizontal plane.
  • the second contact plate 22 is provided so as to be able to contact a part of the outer peripheral wall surface on the ground side of the workpiece 18, for example, the outer peripheral wall surface 110 of the small-diameter portion molding portion A ⁇ b> 11.
  • the length of the second contact plate 22 in the direction of the central axis C18 of the workpiece 18 set in the small diameter portion forming device 20 is the same as the length of the first contact plate 21 in the direction of the central axis C18. It is formed as follows.
  • the drive plate 24 is provided with a first contact plate 21 at one end. The other end is connected to the drive unit 26.
  • the drive plate 24 is provided so as to be movable in a direction (solid arrow F21 shown in FIG. 2) perpendicular to the central axis C18 of the workpiece 18 set in the small-diameter portion forming apparatus 20.
  • the first contact plate 21 can move in a direction perpendicular to the central axis C18.
  • the workpiece 18 moves while rolling in the direction of the solid arrow F22 shown in FIG.
  • the pressurizing unit 25 is provided on the top side of the drive plate 24.
  • the pressurizing unit 25 can press the first contact plate 21 against the workpiece 18 via the drive plate 24.
  • the driving unit 26 is electrically connected to the control unit 8 through a signal line L20.
  • the drive unit 26 is electrically connected to the pressurizing unit 25 through a signal line L21.
  • the drive unit 26 can drive the drive plate 24 in the direction of the solid arrow F21 while pressing the first contact plate 21 against the workpiece 18 in accordance with a control signal output by the control unit 8.
  • the protruding portion forming apparatus 30 includes two rollers 31 and 32 as “second tools”, an upper base 331, a lower base 332, a support shaft 34, a pressing portion 35, a driving portion 36, and the like.
  • the upper side of FIG. 3 is the “top side” and the lower side of FIG. 3 is the “ground side”, but the direction in which the protruding portion forming device 30 is installed is not limited to this.
  • the two rollers 31 and 32 are provided at a position sandwiching the central axis C18 on the radially outer side of the workpiece 18.
  • the two rollers 31 and 32 are rotatably supported by the upper base 331 and the lower base 332, respectively.
  • the two rollers 31 and 32 are provided on a part of the outer peripheral wall surface 120 as the “second outer peripheral wall surface” of the outer peripheral wall surface of the workpiece 18, for example, the protruding portion forming portion A12 (see FIG. 4) of the processed member 18. Abutment is possible.
  • the upper base 331 and the lower base 332 are provided on the top side and the ground side of the workpiece 18.
  • the upper base 331 and the lower base 332 are connected by a plurality of support columns 333 so that the interval in the vertical direction can be changed.
  • the workpiece 18 is connected to one end of the support shaft 34.
  • the other end is connected to the drive unit 36.
  • the support shaft 34 is provided so as to be movable in the radial direction of the workpiece 18 (solid arrow F31 shown in FIG. 3) with respect to the workpiece 18 set in the protruding portion forming device 30.
  • the pressurizing unit 35 is provided on the top side of the upper base 331.
  • the pressure unit 35 can press the roller 31 against the workpiece 18 via the upper base 331.
  • the driving unit 36 is electrically connected to the control unit 8 through a signal line L30.
  • the drive unit 36 is electrically connected to the pressurizing unit 35 through a signal line L31.
  • the drive unit 36 moves the workpiece 18 in the direction of the solid arrow F31 while pressing the roller 31 against the workpiece 18 in accordance with a control signal output from the control unit 8.
  • the two rollers 31 and 32 that are in contact with the outer wall on the radially outer side of the workpiece 18 are pressed against the workpiece 18 while rotating (solid arrows F32 and F33 in FIG. 3A).
  • step 101 either the small-diameter portion forming portion where the small-diameter portion is formed or the protruding portion forming portion where the protruding portion is formed is formed based on the shape of the processed member 10. Is set in the workpiece 18. Specifically, in S101, as shown in FIG. 4A, from the relationship between the processed member 10 and the processed member 18, the portion where the small diameter portions 11, 13, 15, 17 are formed on the processed member 18 The small diameter portion forming portions A11, A13, A15, A17 and the portions where the protruding portions 12, 14, 16 are formed are set as the protruding portion forming portions A12, A14, A16.
  • the part of the workpiece 18 to be formed is a small-diameter part forming part A11, A13, A15, A17 or a protruding part forming part A12, A14, A16.
  • the process proceeds to S103.
  • the parts of the workpiece 18 to be formed are the protrusion forming parts A12, A14, A16, the process proceeds to S104.
  • the workpiece 18 is composed of four small-diameter part forming parts and three projecting part forming parts. Therefore, in S103 or S104, which will be described later, four small diameter parts are provided.
  • the part forming part or the three protruding part forming parts are collectively formed continuously.
  • the workpiece 18 is set in the small-diameter portion molding apparatus 20, and the small-diameter portion molding portion is molded into the small-diameter portion.
  • the molding method of the small diameter portion in S103 will be described by taking the molding of the small diameter portion molding portion A11 as an example.
  • FIG. 6 is a schematic diagram for explaining a method for forming a small diameter portion in S103.
  • the first abutting plate 21 and the second abutting plate 22 are in contact with a part of the outer peripheral wall surface 110 of the small-diameter portion molding portion A11 included in the workpiece 18 set in the small-diameter portion molding apparatus 20.
  • the first contact plate 21 is pressed against a part of the outer peripheral wall surface 110 by the pressurizing unit 25 while reciprocating in the direction of the solid arrow F21 by the drive plate 24 (see FIG. 6B).
  • the workpiece 18 rolls between the first contact plate 21 and the second contact plate 22 while being pressed against the second contact plate 22 by the first contact plate 21.
  • molding apparatus 20 becomes long in the direction of the central axis C18 compared with the small diameter part shaping
  • the small diameter portion forming portions A13, A15, and A17 are also processed while pressing the first contact plate 21 and the second contact plate 22 against the outer peripheral wall surfaces 130, 150, and 170 as the respective “first outer peripheral wall surfaces”.
  • the member 18 is rolled to form the small diameter portions 13, 15 and 17.
  • the workpiece 18 is set in the protruding portion forming apparatus 30, and the protruding portion forming portion is formed into the protruding portion.
  • the forming method of the protruding portion in S104 will be described by taking the forming of the protruding portion forming portion A12 as an example.
  • FIG. 7 is a schematic diagram for explaining a method of forming the protruding portion in S104.
  • Two rollers 31 and 32 are in contact with a part of the outer peripheral wall surface 120 of the protruding portion forming portion A12 of the workpiece 18 (see FIG. 7A) set in the protruding portion forming apparatus 30. While the two rollers 31 and 32 are pressed against the outer peripheral wall surface 120, the material of the projecting portion molding portion A12 is brought in the direction in which the projecting portion 12 is projected (the direction of the white arrow F182 shown in FIG. 7B). It moves in the direction of solid arrows F32 and F33.
  • the protruding portion molding portion A12 becomes the protruding portion 12 protruding in the direction of the white arrow F182 (see FIG. 7C).
  • the projection forming portions A14 and A16 also move in the direction in which the projections 14 and 16 are projected while pressing the two rollers 31 and 32 against the outer circumferential wall surfaces 140 and 160 as the “second outer circumferential wall surfaces”. Then, the protrusions 14 and 16 are formed.
  • S105 it is determined whether or not the part of the workpiece 18 formed in the immediately preceding step is the last part.
  • molded in the last step is not the last site
  • FIG. 8A shows the same state as the workpiece 18 shown in FIG. 4A, that is, the shape of the workpiece 18 before being formed.
  • 8B to 8D show the shape of the workpiece 18 that changes in the order in which it is formed by the forging system 1.
  • FIG. 8 (e) shows the shape of the processed member 10 shown in FIG. 4 (b).
  • a two-dot chain line L18 is shown for convenience of understanding the outer diameter of the workpiece 18.
  • the columnar workpiece 18 shown in FIG. 8A has a small outer diameter that is smaller than the outer diameters of the other small-diameter portion forming portions A13, A15, A17 and the protruding portion forming portions A12, A14, A16.
  • the primary molded product 101 having the portion 11 is obtained (see FIG. 8B).
  • the primary molded product 101 shown in FIG. 8 (b) has an outer diameter of the protruding portion forming portions A12, A14
  • the secondary molded product 102 has small diameter portions 11, 13, 15, and 17 that are smaller than the outer diameter of A16 (see FIG. 8C).
  • the secondary molded product 102 shown in FIG. 8C is interposed between the small diameter portion 11 and the small diameter portion 13. It becomes the tertiary molded product 103 which is located and has the protrusion part 12 in radial direction (refer FIG.8 (d)).
  • the protruding portion forming portions A14 and A16 of the tertiary molded product 103 are formed by the protruding portion forming apparatus 30, the small diameter portions 11, 13, 15, 17 and the protruding portion 12 protruding in the radial direction of the workpiece 18 are formed.
  • the processed member 10 having 14 and 16 is obtained.
  • the workpiece 18 is formed in accordance with the shapes and positions of the small diameter portions 11, 13, 15, 17 and the projecting portions 12, 14, 16 constituting the processed member 10.
  • step S103 the workpiece 18 is moved while the first contact plate 21 and the second contact plate 22 are pressed against the outer peripheral wall surfaces 110, 130, 150, and 170 of the small-diameter portion forming portions A11, A13, A15, and A17. It rolls between the first contact plate 21 and the second contact plate 22. Thereby, a part of the material of the small-diameter portion molding portions A11, A13, A15, and A17 moves in the direction along the central axis C18, so that the outer diameter of the small-diameter portion molding portions A11, A13, A15, and A17 is the workpiece. The outer diameter is smaller than 18, and the small diameter portions 11, 13, 15, and 17 are formed.
  • the workpiece 18 is reciprocated in a direction in which the protrusions are projected while the two rollers 31, 32 are pressed against the outer peripheral wall surfaces 120, 140, 160 of the protrusion forming portions A12, A14, A16. To do. As a result, part of the material of the protruding portion forming portions A12, A14, A16 moves in the radial direction of the workpiece 18 so that the protruding portions 12, 14, 16 protruding in the radial direction of the workpiece 18 are molded.
  • the processed member 18 has the small diameter portions 11, 13, 15, 17 or the protruding portions 12, 14, 16 of the processed member 10 in the processed member 18.
  • the material is moved by pressing the first and second contact plates 21 and 22 and the two rollers 31 and 32.
  • the part constituting the workpiece 18 in S101 is set to one of the small-diameter part forming parts A11, A13, A15, A17 or the protruding part forming parts A12, A14, A16. Is done.
  • the workpiece 18 is divided and set into one of the small-diameter portion forming portions A11, A13, A15, A17 or the protruding portion forming portions A12, A14, A16.
  • Each of the divided parts is processed separately in the small diameter part forming apparatus 20 or the protruding part forming apparatus 30.
  • the contact area between the first contact plate 21 and the second contact plate 22 and the workpiece 18 in the small-diameter portion molding apparatus 20, and the two rollers 31 and 32 and the workpiece in the protrusion molding apparatus 30 Since the contact area with 18 is relatively small, the molding load applied to the first contact plate 21 and the second contact plate 22 or the two rollers 31 and 32 can be reduced.
  • the first contact plate 21 and the second contact plate 22 are formed on the outer peripheral wall surfaces 110, 130, and 150 of the small diameter portion forming portions A11, A13, A15, and A17. , 170 abuts on a part.
  • molding the protrusion parts 12, 14, and 16 the two rollers 31 and 32 contact
  • the processed member 10 manufactured by the method for manufacturing a member according to the first embodiment has improved strength as compared with, for example, a processed member manufactured by a hot forging method. This point will be described with reference to FIG.
  • FIG. 9 shows a cross-sectional view of the processed member.
  • FIG. 9 shows the fiber flow appearing in the cross section of the processed member.
  • the fiber flow is a line that appears in a member by continuous portions where metal crystal grains are relatively dense.
  • Fig.9 (a) shows sectional drawing of the processed member 10 manufactured by the manufacturing method of the member by 1st embodiment.
  • FIG.9 (b) sectional drawing of the processed member 90 manufactured by the hot forging method is shown as a comparative example.
  • the processed member 10 moves the material of the workpiece 18 to form the protrusions 12, 14, 16 as described above, so that the fiber flow Ff10 formed on the protrusions 12, 14, 16 is It will not be cut. For this reason, as shown to Fig.9 (a), since the edge part of the fiber flow Ff10 is not exposed to the side surfaces 121 and 122 of the protrusion part 12, even if external force is added to the side surfaces 121 and 122 of the protrusion part 12 The protrusion 12 is not easily damaged. The same applies to the other protrusions 14 and 16.
  • the processed member 10 is continuous with the fiber flow Ff10 of the small diameter portions 11, 13, 15, 17 adjacent to the protrusions 12, 14, 16 in the fiber flow Ff10 of the protrusions 12, 14, 16, respectively. Therefore, the end portion of the fiber flow Ff10 is not exposed to the side surfaces of the projecting portions 12, 14, and 16. Thereby, since the processed member 10 is not damaged starting from the exposed end of the fiber flow, the strength against an external force can be improved as compared with the processed member 90 of the comparative example.
  • the processed member 10 is used as a common rail. In the common rail, a fuel injection valve is assembled at the protruding tip of the projecting portions 12, 14, and 16, and relatively high pressure fuel is stored therein so that the fuel injection valve can inject.
  • the strength of the protrusions 12, 14, and 16 is greater than that of the processed member 90 formed by the hot specific forging method. It is possible to prevent the fuel from flowing out to the outside due to breakage of 12, 14, and 16.
  • any one of the small-diameter portion forming portions A11, A13, A15, A17 or the protruding portion forming portions A12, A14, A16 is set based on the shape of the processed member 10. Therefore, it is possible to cope with a change in the shape of the processed member 10. Accordingly, the degree of freedom in shape can be increased.
  • the molding site can be continuously processed. Thereby, the manufacturing time of the processed member 10 can be shortened.
  • the small diameter portion forming apparatus 20 moves a part of the material of the small diameter portion forming portions A11, A13, A15, A17 in the direction along the central axis C18 and moves the small diameter portions 11, 13 to each other. , 15 and 17 are formed.
  • the protruding portion forming device 30 moves the material of the protruding portion forming portions A12, A14, A16 in the radial direction of the workpiece 18 to form the protruding portions 12, 14, 16.
  • the forging system 1 can use all the material of the workpiece 18 as the material of the processed member 10, so that unnecessary portions such as burrs are not generated and the material yield can be improved. Further, since unnecessary portions do not occur, the number of steps for removing burrs from the manufactured member becomes unnecessary. Thereby, the manufacturing time of the processed member 10 can be shortened.
  • each portion of the workpiece 18 to which either the small diameter portion forming device 20 or the protruding portion forming device 30 is set is processed separately.
  • the first contact plate 21, the second contact plate 22, and the two rollers 31, 32 contact a part of the outer peripheral wall surface 110, 120, 130, 140, 150, 160, 170 of the workpiece 18. .
  • the contact area between the first contact plate 21 and the second contact plate 22 and the workpiece 18 is relatively small, so that the first contact plate 21 and the second contact plate 22 are molded.
  • the load can be reduced.
  • the molding load applied to the two rollers 31 and 32 can be reduced. Therefore, the physique of the forging system 1 can be reduced.
  • the second embodiment differs from the first embodiment in the configuration of the small-diameter portion molding apparatus and the content of the small-diameter portion molding step.
  • symbol is attached
  • FIG. 9 shows a schematic diagram of a small diameter part forming apparatus 40 provided in the forging system according to the second embodiment.
  • the small diameter portion forming apparatus 40 includes a first punch 41 as a “first tool”, a second punch 42 as a “first tool”, a base 43, a drive plate 441, a support shaft 442, a pressure unit 45, and a drive unit 46.
  • a first punch 41 as a “first tool”
  • a second punch 42 as a “first tool”
  • a base 43 a drive plate 441, a support shaft 442, a pressure unit 45, and a drive unit 46.
  • the upper side of FIG. 9 is the “top side” and the lower side of FIG. 9 is the “ground side”, but the direction in which the small-diameter portion forming device 40 is installed is not limited to this.
  • the first punch 41 is positioned on the top side of the workpiece 18 to be set in the small diameter part forming device 40.
  • the first punch 41 is supported by the drive plate 44.
  • the first punch 41 is provided so as to be able to contact the outer peripheral wall surface of the workpiece 18, for example, the outer peripheral wall surface 110 of the small-diameter portion forming portion A ⁇ b> 11.
  • the length of the first punch 41 in the direction of the central axis C18 of the workpiece 18 set in the small-diameter portion forming apparatus 40 is the length of the small-diameter portions 11, 13, 15 and 17 of the processed member 10 in the direction of the central axis C10. It is formed to be shorter.
  • the second punch 42 is located on the ground side of the workpiece 18 set in the small diameter part forming device 40. That is, the second punch 42 is located on the opposite side of the first punch 41 with the central axis C18 of the workpiece 18 interposed therebetween.
  • the second punch 42 is fixed on a base 43 that is fixed on a horizontal plane.
  • the 2nd punch 42 is provided so that contact
  • the second punch 42 is formed such that the length of the workpiece 18 set in the small-diameter portion forming apparatus 40 in the direction of the central axis C18 is the same as the length of the first punch 41 in the direction of the central axis C18. Yes.
  • the drive plate 441 is provided with a first punch 41 at one end. The other end is connected to the drive unit 46.
  • the drive plate 441 is provided to be movable in the vertical direction (solid arrow F101 shown in FIG. 10). Thereby, the first punch 41 is movable in the vertical direction.
  • the workpiece 18 is fixed to one end of the support shaft 442.
  • the other end is rotatably connected to the drive unit 46.
  • the support shaft 442 is provided such that the workpiece 18 can be moved in the vertical direction (solid arrow F102 shown in FIG. 10) and can be rotated about the central axis C18 (solid arrow F103 shown in FIG. 10).
  • the pressurizing unit 45 is provided on the top side of the drive plate 44.
  • the pressure unit 45 can press the first punch 41 against the workpiece 18 via the drive plate 44.
  • the driving unit 46 is electrically connected to the control unit 8 through a signal line L20. Further, the drive unit 46 is electrically connected to the pressurizing unit 45 through a signal line L41. The drive unit 46 can press the first punch 41 against the workpiece 18 in accordance with a control signal output from the control unit 8. In addition, the drive unit 46 can drive the support shaft 442 in the direction of the solid arrow F102 and can rotate in the direction of the solid arrow F103 in accordance with a control signal output by the control unit 8.
  • FIGS. 11 and 12 are schematic views showing the positional relationship between the first punch 41, the second punch 42, and the workpiece 18 in the cross section shown in FIG. 11 (a) to 11 (c) and FIGS. 12 (a) to 12 (c) show the contents of the process in S103 (see FIG. 5) as a “small diameter part forming process” in the small diameter part forming apparatus 40 in time. Shown along.
  • the small-diameter portion molding portion A11 of the workpiece 18 set in the small-diameter portion molding apparatus 40 is moved so as to contact the second punch 42 (solid arrow F111 in FIG. 11A).
  • the first punch 41 is moved so that the first punch 41 comes into contact with the outer peripheral wall surface 110 opposite to the outer peripheral wall surface 110 with which the second punch 42 of the small-diameter portion molding portion A11 contacts with the central axis C18 in between ( A solid arrow F112 in FIG.
  • the first punch 41 comes into contact with the small-diameter portion forming portion A11, the first punch 41 is pressed against the outer peripheral wall surface 110 by the pressing portion 45, and the processing grooves 111 and 112 are formed in the outer peripheral wall surface 110 of the small-diameter portion forming portion A11 ( (Refer FIG.11 (b)).
  • the small-diameter portion forming portion A11 is separated from the second punch 42.
  • the workpiece 18 is rotated about the central axis C18 by a predetermined angle ⁇ in the direction of the solid arrow F113. (See FIG. 11 (c))
  • the small-diameter portion forming portion A11 of the workpiece 18 that has stopped rotating moves so as to contact the second punch 42 (solid arrow F121 in FIG. 12A). At this time, the second punch 42 is brought into contact with the outer wall near the machining groove 112.
  • the first punch 41 is moved so that the first punch 41 comes into contact with the outer peripheral wall surface 110 opposite to the outer peripheral wall surface 110 with which the second punch 42 of the small-diameter portion molding portion A11 contacts with the central axis C18 in between ( The solid line arrow F122 of Fig.12 (a).
  • the first punch 41 is brought into contact with the vicinity of the outer peripheral wall surface 110 where the machining groove 111 is formed. That is, the predetermined angle ⁇ is a rotation angle at which the first punch 41 can be brought into contact with the vicinity where the machining groove 111 is formed, as shown in FIG.
  • the pressing portion 45 presses the first punch 41 against the outer peripheral wall surface 110, thereby forming the processing grooves 113 and 114 on the outer peripheral wall surface 110 of the small-diameter portion forming portion A11 ( (Refer FIG.12 (b)).
  • the first punch 41 and the second punch 42 are applied to a part of the outer peripheral wall surfaces 110, 130, 150, and 170 of the small-diameter portion forming portions A11, A13, A15, and A17.
  • a plurality of processed grooves are formed in contact with each other.
  • the plurality of processed grooves are formed such that the bottom surfaces thereof are the outer walls of the small diameter portions 11, 13, 15, and 17 of the processed member 10. Further, the material of the small-diameter portion molding portion that is extruded from the small-diameter portion molding portion by the formation of the machining groove moves in the direction along the central axis C18.
  • the small-diameter portion molding portions A11, A13, A15, and A17 in which a plurality of machining grooves are formed by the first punch 41 and the second punch 42 have a smaller outer diameter than before molding, and have a desired outer diameter.
  • the small diameter portions 11, 13, 15, and 17 that are included can be formed. Therefore, the manufacturing method of the member by a second embodiment has the same effect as a first embodiment.
  • the first punch 41 and the second punch 42 are in contact with a part of the outer peripheral wall surfaces 110, 130, 150, and 170 of the small-diameter portion forming portions A11, A13, A15, and A17. .
  • the forge processing system by 2nd embodiment has the same effect as 1st embodiment.
  • the third embodiment is different from the first embodiment in that the material assembling step is performed before the second molding step.
  • symbol is attached
  • the member manufacturing system according to the third embodiment is shown in FIGS.
  • the forging system 3 as a “member manufacturing system” includes a control unit 8, a small-diameter portion forming device 20, a protruding portion forming device 30, a material gathering device 50, and the like.
  • the material assembling apparatus 50 includes a material assembling punch 51 as a “material assembling tool”, a support plate 52, a base 53, a driving plate 54, a pressing unit 55, a driving unit 56, and the like.
  • a material assembling punch 51 as a “material assembling tool”
  • a support plate 52 for convenience of explanation, the upper side of FIG. 14 is referred to as “top side”, and the lower side of FIG. 13 is referred to as “ground side”, but the direction in which the material gathering device 50 is installed is not limited to this.
  • the material assembling punch 51 is a member having a substantially L-shaped cross section.
  • the material assembling punch 51 includes a punch main body 511, a first contact portion 512, a second contact portion 513, and the like.
  • FIG. 14 shows a state in which the two small-diameter portion molding portions A11 and A13 and the two protruding portion molding portions A12 and A14 of the workpiece 18 are set in the material assembling apparatus 50.
  • the aligning device 50 it is possible to change the length of the punch body portion 511 of the material aligning punch 51 in accordance with the length of the workpiece set in the material aligning device 50 and to process a desired part. .
  • the punch main body 511 is a substantially flat portion formed so as to extend in the vertical direction. One end of the punch body 511 is supported by the drive plate 54. A first contact part 512 and a second contact part 513 are provided at the other end.
  • the first contact portion 512 is formed so as to extend in the direction of the workpiece 18 from the side wall of the punch body 511 on the workpiece 18 side.
  • the ground-side end surface 514 of the first contact portion 512 is formed so as to be separated from the central axis C18 of the workpiece 18 as it goes toward the ground.
  • the end surface 514 is provided so that it can contact
  • the second contact portion 513 is provided on the ground side of the punch main body portion 511 and the first contact portion 512.
  • An end surface 515 on the workpiece 18 side of the second contact portion 513 is formed so as to contact the workpiece 18.
  • the end surface 515 is provided so that it can contact
  • the support plate 52 is positioned on the opposite side of the material alignment punch 51 in the workpiece 18 set in the material alignment device 50.
  • the support plate 52 is fixed to the base 53.
  • the base 53 restricts the movement of the workpiece 18 to which the material-feeding punch 51 is pressed.
  • the drive plate 54 is connected to the drive unit 56 while supporting the material punching punch 51.
  • the drive plate 54 is provided so as to be movable in a direction (solid arrow F51 shown in FIG. 14) perpendicular to the central axis C18 of the workpiece 18 set in the material assembling apparatus 50.
  • the material shifting punch 51 supported by the drive plate 54 can move in a direction perpendicular to the central axis C18.
  • the pressurizing unit 55 is provided on the top side of the drive plate 54.
  • the pressurizing unit 55 can press the material shifting punch 51 against the workpiece 18 via the drive plate 54.
  • the driving unit 56 is electrically connected to the control unit 8 through a signal line L50. Further, the drive unit 56 is electrically connected to the pressurizing unit 55 through a signal line L51.
  • the drive unit 56 can drive the drive plate 54 in the direction of the solid arrow F51 while pressing the material-feeding punch 51 against the workpiece 18 in accordance with a control signal output from the control unit 8. Thereby, the workpiece 18 moves while rolling along the side wall of the support plate 52 on the material feeding punch 51 side.
  • any part of the small diameter part forming part where the small diameter part is formed or the protruding part forming part where the protruding part is formed based on the shape of the processed member 10 Is set to the workpiece 18.
  • the workpiece 18 is set in the small diameter portion forming apparatus 20 in the same manner as in S103 of the first embodiment, and the small diameter portion forming portion is formed into a small diameter portion.
  • FIG. 16 shows a schematic diagram of the workpiece 18 as seen from the small-diameter portion molding site A11 side in the direction of the central axis C18.
  • FIG. 16 shows a change in shape in the processing of the small-diameter portion forming portion A11 in S302 (FIGS. 16A and 16B), and a change in shape in the material shifting processing of the protruding portion forming portion A12 in S303 (FIG. 16). (B) and FIG. 16 (c)), and a change in shape (FIG. 16 (c) and FIG. 16 (d)) in the processing of the protruding portion forming part A12 in the next S304 are schematically shown.
  • the processing in S302 is performed on the small-diameter portion forming portion A11 shown in FIG. Thereby, the small diameter part 11 is shape
  • the material forming process in S303 is performed on the protruding portion forming portion A12 shown in FIG. At this time, the protruding portion forming portion A12 is formed so as to protrude in the direction of the white arrow F182.
  • the material in the region A121 as “the side opposite to the side from which the protruding portion protrudes” of the protruding portion forming portion A12 is used as the material on the side opposite to the side from which the protruding portion protrudes.
  • the material feed punch 51 is driven so as to move to the regions A122 and A123 as “between protruding sides”.
  • the regions A122 and A123 of the projecting portion molding part A12 are regions that are located at approximately 90 degrees with respect to the region A121 when viewed from the point on the central axis C18, and are compared with the region A121. This is a region close to the region A120 as “the side from which the protruding portion protrudes”.
  • the material shifting punch 51 moves in the direction of the white arrow F182 while being pressed against the outer peripheral wall surface 120 of the projecting portion molding part A12
  • the material of the region A121 is as indicated by solid arrows F151 and F152 shown in FIG. Move to areas A122 and A123.
  • region A122, A123 is compared with the thickness of protrusion part shaping
  • the other protrusion forming portions A14 and A16 may be subjected to the same meat gathering process.
  • the materials of the regions A122 and A123 of the protruding portion molding part A12 are moved in the direction of the white arrow F182 by the two rollers 31 and 32 as shown by solid arrows F153 and F154 in FIG.
  • the protrusion 12 is formed.
  • the other protrusion forming portions A14 and A16 may be subjected to the same meat gathering process.
  • FIG. 17 shows the movement of the material when forming the protruding portion forming portion into the protruding portion.
  • FIG. 17A shows the movement of the material when the protruding portion forming portion is formed into the protruding portion in the member manufacturing method according to the third embodiment.
  • FIG. 17B shows the movement of the material when forming the protruding portion forming portion into the protruding portion in the forging method that does not include the material shifting step as a comparative example.
  • the movement of materials in the forging method of the comparative example will be described.
  • the material of the region A921 opposite to the direction of the white arrow F982 of the protrusion forming portion A92 is white. It is necessary to move in the direction of the arrow F982 at once (solid arrows F161 and F162 shown in FIG. 17B).
  • solid arrows F161 and F162 shown in FIG. 17B solid arrows F161 and F162 shown in FIG. 17B.
  • the movement distance of the material in one molding becomes long, there is a possibility that the material in other parts is caught or sheared by the moving material, and the strength of the protrusion 92 may be reduced.
  • the material of the region A121 opposite to the direction of the white arrow F182 of the protruding portion forming portion A12 is temporarily moved to the regions A122 and A123 of the protruding portion forming portion A12. (Solid arrows F151 and F152 shown in FIG. 17A). Thereafter, in S304, the materials of the regions A122 and A123 are moved to the region A120 (solid arrows F153 and F154 shown in FIG. 17A), and the protruding portion 12 is formed.
  • the protrusions 12, 14, 16 are made of the material opposite to the direction in which the protrusions 12, 14, 16 of the protrusion forming portions A 12, A 14, A 16 protrude.
  • the region moves between the side opposite to the protruding side and the side from which the protruding portions 12, 14, 16 protrude.
  • the material moved between the side opposite to the side from which the projecting parts 12, 14, 16 project and the side from which the projecting parts 12, 14, 16 project is moved to the side from which the projecting parts 12, 14, 16 project. Move again. Thereby, it is possible to prevent the material in other parts from being caught or sheared by the moving material. Therefore, the member manufacturing method and member manufacturing system according to the third embodiment can achieve the same effects as those of the first embodiment, and can improve the strength of the protrusions.
  • the material on the side opposite to the direction in which the protrusions 12, 14, and 16 of the protrusion molding portions A12, A14, and A16 protrude is relatively Since it is not necessary to move it for a long distance, the projecting portion can be easily formed.
  • the processed member includes a plurality of small-diameter portions formed in a columnar shape and a plurality of projecting portions provided adjacent to the small-diameter portions and projecting in the radial direction of the workpiece.
  • the relationship between the small diameter portion and the protruding portion is not limited to this.
  • the cross-sectional size of the small-diameter portion may be smaller than the outer diameter of the workpiece.
  • the direction in which the protrusions protrude may be different.
  • the small-diameter portion forming apparatus has a plurality of “first tools”, and the plurality of first tools are provided at positions sandwiching the central axis of the workpiece.
  • the first tool included in the small-diameter portion forming device may be one, or even if there are a plurality of tools, it may not be provided at a position sandwiching the central axis of the workpiece.
  • the protruding portion forming apparatus has a plurality of “second tools”, and the plurality of second tools are provided at positions sandwiching the central axis of the workpiece.
  • the number of second tools included in the protruding portion forming apparatus may be one, and even when there are a plurality of the second tools, it may not be provided at a position sandwiching the central axis of the workpiece.
  • the member to be processed is processed from one end side.
  • the order of processing the workpiece is not limited to this.
  • the processed member is composed of four small diameter portions and three projecting portions.
  • the numbers of the small diameter portions and the protruding portions constituting the processed member are not limited to this. What is necessary is just to be comprised from one or more small diameter parts and one or more protrusion parts.
  • the processing order of the small diameter portion forming portion and the protruding portion forming portion is not limited to this. You may process a small diameter part shaping
  • the second contact plate or the second punch and the base that contact the workpiece are provided on the ground side of the small-diameter portion forming apparatus.
  • the ground side configuration of the small-diameter portion forming apparatus is not limited to this. You may have the press part which presses a 2nd contact plate or a 2nd punch against a to-be-processed member in addition to the 2nd contact plate or 2nd punch which contacts a to-be-processed member, and the base which instruct
  • the first punch is formed immediately before the first punch around the central axis of the workpiece. It is rotated by a predetermined angle so that it can be brought into contact with the vicinity where the processing groove is formed.
  • the predetermined rotation angle is not limited to this. What is necessary is just to rotate so that a processing groove may be formed in the whole outer peripheral wall surface of a small diameter part formation site
  • the member manufactured by the above manufacturing method is used as a common rail.
  • the example to which a member is applied is not limited to this. Any member may be used as long as it has a small-diameter portion that is formed in a columnar shape or a cylindrical shape, such as a crankshaft or a camshaft, and a protruding portion that protrudes in the radial direction from the small-diameter portion.
  • the small-diameter portion forming portion where the small-diameter portion is formed or the protruding portion forming portion where the protruding portion is formed based on the shape of the processed member is set as the workpiece. However, this step is not necessary.
  • the present disclosure is not limited to such an embodiment, and can be implemented in various forms without departing from the gist thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un élément comprenant une première étape de moulage et une seconde étape de moulage. Dans la première étape de moulage, un premier outil (21, 22, 41, 42) est pressé contre une partie d'une première surface de paroi circonférentielle (110, 130, 150, 170) d'un élément devant être traité (18) qui est présenté de manière rotative de façon à mouler une partie de petit diamètre (11, 13, 15, 17) ayant un diamètre externe plus petit que le diamètre externe de l'élément devant être traité (18). Dans la seconde étape de moulage, un second outil (31, 32) est déplacé dans la direction du diamètre par rapport à l'élément devant être traité tout en étant pressé contre une partie d'une seconde surface de paroi circonférentielle (120, 140, 160) de l'élément devant être traité de façon à mouler une partie en saillie (12, 14, 16) qui fait saillie dans la direction du diamètre de l'élément devant être traité.
PCT/JP2016/000285 2015-02-04 2016-01-21 Procédé de fabrication d'élément, et système de fabrication d'élément WO2016125439A1 (fr)

Applications Claiming Priority (4)

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JP2015020293 2015-02-04
JP2015-020293 2015-02-04
JP2015-246121 2015-12-17
JP2015246121A JP2016144828A (ja) 2015-02-04 2015-12-17 部材の製造方法、及び、部材の製造システム

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0679390A (ja) * 1992-09-04 1994-03-22 Mitsubishi Heavy Ind Ltd 棒状物の鍛造方法
JP2006300019A (ja) * 2005-04-25 2006-11-02 Kubota Tekkosho:Kk 中空カム軸の製造方法
US20150343519A1 (en) * 2012-12-20 2015-12-03 C.R.F. Società Consortile Per Azioni Method for producing a camshaft for an internal-combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0679390A (ja) * 1992-09-04 1994-03-22 Mitsubishi Heavy Ind Ltd 棒状物の鍛造方法
JP2006300019A (ja) * 2005-04-25 2006-11-02 Kubota Tekkosho:Kk 中空カム軸の製造方法
US20150343519A1 (en) * 2012-12-20 2015-12-03 C.R.F. Società Consortile Per Azioni Method for producing a camshaft for an internal-combustion engine

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